In a semiconducting material (1/5)th of the total current is carried by the holes and the remain...

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In a semiconducting material (1/5)th of the total current is carried by the holes and the remaining is carried by the electrons. The drift speed of electrons is twice that of holes at this temperature. The ratio between the number densities of electrons and holes is
(A) \( 21 / 6 \)
(B) 5
(C) \( 3 / 8 \)
(D) 2
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